The first Earth Day was held on April 20, 1990.
Answer the following statement true (T) or false (F)
False
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The flow of glaciers is best described as ________
A) erratic B) turbulent C) nocturnal D) non-erosive E) corrosive
Compared to a younger cinder cone, an older cinder cone would have
A) more soil and plants. B) darker lava color. C) a more prominent central crater. D) All of these are correct.
Which explanation best describes how oceanic crust is formed?
A) Continental crust is swallowed by the sea at subduction zones. B) Oceanic crust is extracted from the mantle by partial melting and crystallization. C) Oceanic crust crystallizes in the core and is pushed up through volcanic pipes. D) Oceanic crust formed when magma ocean cooled and has remained unchanged except around plate boundaries and at hot spots.
In regions of moderate to high rainfall, the top of a stream is the same as the ____
A)top of the zone of aeration B)top of the zone of saturation C)bottom of the aquifer D)bottom of the zone of aeration E)top of the water table